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authorMasahiro Yamada <yamada.masahiro@socionext.com>2018-01-18 01:28:06 +0900
committerUlf Hansson <ulf.hansson@linaro.org>2018-01-18 09:08:56 +0100
commit1910b87f7a9e6d9f9085d36e45dce1e5547c692d (patch)
tree98961cb5f5855c97190122784ff75d94b79e8518 /drivers/mmc
parent85f9ef8cdfb463e6e8ff9fe8cdcc0aed438b526e (diff)
downloadlinux-1910b87f7a9e6d9f9085d36e45dce1e5547c692d.tar.bz2
mmc: tmio: refactor .get_ro hook
This IP provides the write protect signal level in the status register, but it is also possible to use GPIO for WP. They are exclusive, so it is not efficient to call mmc_gpio_get_ro() every time from tmio_mmc_get_ro() if we know gpio_ro is not used. Check the capability of gpio_ro just once in the probe function, then set mmc_gpio_get_ro to .get_ro if it is the case. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/tmio_mmc_core.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index 7d8eec24f0ed..6d8719be75a8 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -1076,15 +1076,9 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc)
{
struct tmio_mmc_host *host = mmc_priv(mmc);
struct tmio_mmc_data *pdata = host->pdata;
- int ret = mmc_gpio_get_ro(mmc);
- if (ret >= 0)
- return ret;
-
- ret = !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) ||
- (sd_ctrl_read16_and_16_as_32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT));
-
- return ret;
+ return !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) ||
+ (sd_ctrl_read16_and_16_as_32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT));
}
static int tmio_multi_io_quirk(struct mmc_card *card,
@@ -1247,6 +1241,9 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
}
mmc->max_seg_size = mmc->max_req_size;
+ if (mmc_can_gpio_ro(mmc))
+ _host->ops.get_ro = mmc_gpio_get_ro;
+
_host->native_hotplug = !(mmc_can_gpio_cd(mmc) ||
mmc->caps & MMC_CAP_NEEDS_POLL ||
!mmc_card_is_removable(mmc));